Lubricating pump



Feb. 16, 1932. K. LoRiNz ET AL 1,845,429

LUBRICATING PUMP Filed Qc.. 18,' 1929 naman vret., ia .ieaa

KARL LOBENZ AND GOTTLOB SCEIESSWQHL, F STUTTGART, GERMANY, ASSIGNORS TOI BBEBT BOSCH AKTIENGESELLSGHAFT, 0F STUTTGABT, GERMANY auanrcarme romaApplication filed october 18, 1929, Serial No. @0,716, and in GermanyOctober 20, 1928.

The present invention relates to lubricating pumps and more particularlyto pumps having detachably mounted thereon a lubricant container inwhich a stirring apparatus @driven from the 'pump is rotated, whichstir- 'ring. apparatus carries the grease stored in pump, the shaft ofthe stirring apparatus' .is connected to the ump shaft by means ofrelatively axially dsplaceable coupling ele- ,go .ments such as socketor clutch couplings.

In the accompanying drawing one form of construction according to theinvention .is shown by way of example in partial longi- .tudinal sectioA cylindrical pump body ai together with a rotatable pump shaft vblismounted on a base member c and is secured thereto by a screw connection.The pump shaft operates in addition to its normal function as la con- 39trolling or distributing shaft and receives ,its drive through a shaftc' mounted the base part c, throufl'h a screw or worm wheel drive? heunderside of the base member,-

as shown. T forms asuppo'tin and securing surface. On the upper end of te pump shaft is a cam disc d which causes a pump piston or plunger edisposed about the pump shaft to move up and down in known manner. Ahalf coupling f, having a slot g formed therein is provided at the endof the shaft b for engagement by a half coupling k secured to a stirrerm.. The shaft ic is mounted in bearings in a neck-piece n screwed on tothe pump body and on which is mounted a sheet metal con-l tainer o', Astrainer p is fitted on the neckpiece belowthe stirring apparatus.

In order to inspect the pump or to adjust the quantity delivered by the.iston e, by means of an adjusting screw g th This can be efiectedwithout necessitating the dismounting of the stirring apparatus by meansof the clutch coupling existing between the pump shaft b and shaft kofthe stirring apparatus.

rThe length of contact of the clutch couplingm is-greater than thedistance y. with which the thread on the neck piece en ages withopposite thread on the pump bo y so that the screwing of the containeron to the pump body can only be efl'ected after the clutch coupling isin engagement.

We claim:

l. A lubricating pump comprising a base, a pump chamber mounted on saidbase, a pump shaft arranged within said chamber, a lubricant containerdetachably mounted on the pump chamber, a stirrer supported Within saidcontainer, and releasable clutch means connecting said stirrer to ,saidpump shaft and arranged to disconnect said stirrer from said shaft whensaid container is detached from said chamber.

2. A lubricating pump comprising a pump chamber, a pump shaft andplunger arranged within said chamber, a lubricant container detachablymounted on the pump chamber, a stirrer arranged within said container,and relatively axally displaceable coupling elements4 connected to thepump shaft and the stirrer for. obtaining rotation of the stirreron'r'otation of the pump shaft, said coupling element being arranged todisconnect 'said stirrer from said shaft when said container isldetached from 'said chamber.

3. A lubricating pump comprising a pum chamber, a ump shaft and plungerarran e concentrica y within said chamber, a lu ricant container mountedconcentrically on the pump chamber and secured thereto by means` of ascrew thread connection, a stirrer ar-v' ranged concentrically withinsaid container. and relatively axially displaceable coupling elementsconnected to the ump shaft and the stirrer for obtaining rotaton of thestirrer 'on )rotation ofthe pump shaft, the axial length of theinterengagingportions of said coupling elements being greater thantl'eaxial length e container, of the screw thread connection between thetogether with the neck piece must be removed. vpump chamber andcontainer.

4. A lubricating pump comprising a base, a pump chamber mounted on saidbase, a pump shaft arranged within said chamber, a pump plunger andmeans for adjusting the throw of said plunger enclosed within saidchamber, a lubricant container detachably mounted on the pump chamber inalignment with said pum'o shaft and arranged to cover said adjustingmeans, a stirrer supported Within said container, and a releasableclutch means connecting said stirrer to said pump shaft and arranged todisconnect said stirrer when the container is removed to obtain accessto said adjusting means.

In testimony whereof We have hereunto aflixed our signatures.

KARL LORENZ. GOTTLOB SCHIESSWOHL.

